Display drive circuit and display apparatus

Abstract

A display drive circuit comprises a timing control module, a source drive module and a polarity selection module. The source drive module is electrically connected to a plurality of data lines. A control signal output from the timing control module is input to the source drive module via the polarity selection module. When the polarity selection module receives only the control signal, the polarity selection module outputs a first control signal, having the same polarity as that of the control signal, to the source drive module. When the polarity selection module receives the control signal and a polarity reversal signal at the same time, the polarity selection module outputs the first control signal, having the same polarity as that of the control signal, and a second control signal, having an opposite polarity to that of the control signal, to the source drive module.

What is claimed is: 
     
       1. A display drive circuit, comprising:
 a timing control module; 
 a source drive module electrically connected to a plurality of data lines and comprising a first type input terminal and a second type input terminal; and 
 a polarity selection module comprising a first type output terminal, a second type output terminal, a first input terminal and a second input terminal, 
 wherein the first input terminal of the polarity selection module is connected to an output terminal of the timing control module, the second input terminal of the polarity selection module is connected to a polarity reversal signal terminal, the first type output terminal of the polarity selection module is connected to the first type input terminal of the source drive module, the second type output terminal of the polarity selection module is connected to the second type input terminal of the source drive module; 
 when the polarity selection module receives a control signal sent from the timing control module and a polarity reversal signal sent from the polarity reversal signal terminal at the same time, the first type output terminal outputs a first control signal, having the same polarity as that of the control signal, to the first type input terminal of the source drive module, and the second type output terminal outputs a second control signal, having an opposite polarity to that of the control signal, to the second type input terminal of the source drive module; 
 when the polarity selection module receives only the control signal sent from the timing control module, the first and second type output terminals output the first control signals, having the same polarity as that of the control signal, to the first and second type input terminals of the source drive module, respectively; and 
 wherein the first control signal and the second control signal both are used to control a polarity of data signals sent from the source drive module to the data lines, the polarity of data signals sent from the source drive module to the data lines under the control of the first control signal is different from the polarity of data signals sent from the source drive module to the data lines under the control of the second control signal, 
 wherein the polarity selection module further comprises a phase reversion selector; 
 wherein the first input terminal of the polarity selection module is electrically connected to the first type output terminal directly by a lead; and 
 wherein the first input terminal and the second input terminal of the polarity selection module both are electrically connected to the second type output terminal via the phase reversion selector. 
 
     
     
       2. The display drive circuit according to  claim 1 ,
 wherein the source drive module comprises a plurality of first type input terminals and a plurality of second type input terminals, and 
 wherein the polarity selection module comprises a plurality of first type output terminals and a plurality of second type output terminals. 
 
     
     
       3. The display drive circuit according to  claim 2 ,
 wherein the number of the first type output terminals of the polarity selection module is equal to that of the second type output terminals of the polarity selection module. 
 
     
     
       4. The display drive circuit according to  claim 3 ,
 wherein the first type input terminals and the second type input terminals of the source drive module are alternately arranged. 
 
     
     
       5. The display drive circuit according to  claim 4 ,
 wherein the source drive module comprises a plurality of source drive sub-modules each connected to at least one data line; and 
 wherein the plurality of source drive sub-modules are electrically connected to the first type output terminals or the second type output terminals of the polarity selection module, respectively. 
 
     
     
       6. The display drive circuit according to  claim 3 ,
 wherein the first type input terminals of the source drive module are consecutively arranged, and the second type input terminals of the source drive module are consecutively arranged. 
 
     
     
       7. The display drive circuit according to  claim 6 ,
 wherein the source drive module comprises a plurality of source drive sub-modules each connected to at least one data line; and 
 wherein the plurality of source drive sub-modules are electrically connected to the first type output terminals or the second type output terminals of the polarity selection module, respectively. 
 
     
     
       8. The display drive circuit according to  claim 3 ,
 wherein the source drive module comprises a plurality of source drive sub-modules each connected to at least one data line; and 
 wherein the plurality of source drive sub-modules are electrically connected to the first type output terminals or the second type output terminals of the polarity selection module, respectively. 
 
     
     
       9. The display drive circuit according to  claim 2 ,
 wherein the source drive module comprises a plurality of source drive sub-modules each connected to at least one data line; and 
 wherein the plurality of source drive sub-modules are electrically connected to the first type output terminals or the second type output terminals of the polarity selection module, respectively. 
 
     
     
       10. The display drive circuit according to  claim 1 ,
 wherein the source drive module comprises a plurality of source drive sub-modules each connected to at least one data line; and 
 wherein the plurality of source drive sub-modules are electrically connected to the first type output terminals or the second type output terminals of the polarity selection module, respectively. 
 
     
     
       11. The display drive circuit according to  claim 1 ,
 wherein the source drive module comprises a plurality of source drive sub-modules each connected to at least one data line; and 
 wherein the plurality of source drive sub-modules are electrically connected to the first type output terminals or the second type output terminals of the polarity selection module, respectively. 
 
     
     
       12. A display apparatus, comprising:
 a display panel provided with a plurality of data lines; and 
 a display drive circuit according to  claim 1 . 
 
     
     
       13. The display apparatus according to  claim 12 ,
 wherein the polarity selection module further comprises a phase reversion selector; 
 wherein the first input terminal of the polarity selection module is electrically connected to the first type output terminal directly by a lead; and 
 wherein the first input terminal and the second input terminal of the polarity selection module both are electrically connected to the second type output terminal via the phase reversion selector. 
 
     
     
       14. The display apparatus according to  claim 13 ,
 wherein the source drive module comprises a plurality of source drive sub-modules each connected to at least one data line; and 
 wherein the plurality of source drive sub-modules are electrically connected to the first type output terminals or the second type output terminals of the polarity selection module, respectively. 
 
     
     
       15. The display apparatus according to  claim 12 ,
 wherein the source drive module comprising a plurality of first type input terminals and a plurality of second type input terminals, and 
 wherein the polarity selection module comprising a plurality of first type output terminals and a plurality of second type output terminals. 
 
     
     
       16. The display apparatus according to  claim 15 ,
 wherein the number of the first type output terminals of the polarity selection module is equal to that of the second type output terminals of the polarity selection module. 
 
     
     
       17. The display apparatus according to  claim 16 ,
 wherein the first type input terminals and the second type input terminals of the source drive module are alternately arranged. 
 
     
     
       18. The display apparatus according to  claim 16 ,
 wherein the first type input terminals of the source drive module are consecutively arranged, and the second type input terminals of the source drive module are consecutively arranged. 
 
     
     
       19. The display apparatus according to  claim 12 ,
 wherein the source drive module comprises a plurality of source drive sub-modules each connected to at least one data line; and 
 wherein the plurality of source drive sub-modules are electrically connected to the first type output terminals or the second type output terminals of the polarity selection module, respectively.